//xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 模板特化
#define _MY_IN_CLASS_SPECIAL_ 0  // 在 class 内部特化
#define _MY_DEF_IN_HEADER_ 0     // 将模板定义写在 头文件中

// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 测试框架
// test namespace start
#define _MY_TEST_NAMESPACE_STT(nsNmae) \
    namespace nsNmae                   \
    {
#define _MY_TEST_NAMESPACE_END(nsNmae) }  // namespace end

// test space start
#define _MY_TEST_SPACE_STT(nsNmae) _MY_TEST_NAMESPACE_STT(nsNmae)
// test space end
#define _MY_TEST_SPACE_END(nsNmae) }

/// test function start
#define _MY_TEST_SPACE_FUN_STT(funName) \
    MY_FIN_I8 funName()                    \
    {                                   \
        MY_ECHOFUNPATH;
/// test function end
#define _MY_TEST_SPACE_FUN_END(funName) \
    return 0;                           \
    }

#define _MY_TEST_SPACE_FUN_END2 \
    return 0;                   \
    }                           \
    }

//xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 计算 __VA_ARGS__ 参数个数
// https://stackoverflow.com/questions/2124339/c-preprocessor-va-args-number-of-arguments
#define MY_NARG(...) _PP_NARG_(__VA_ARGS__, PP_RSEQ_N())
#define _PP_NARG_(...) _PP_ARG_N(__VA_ARGS__)
#define _PP_ARG_N(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, \
                  _29, _30, _31, _32, _33, _34, _35, _36, _37, _38, _39, _40, _41, _42, _43, _44, _45, _46, _47, _48, _49, _50, _51, _52, _53, _54,  \
                  _55, _56, _57, _58, _59, _60, _61, _62, _63, N, ...)                                                                               \
    N
#define PP_RSEQ_N()                                                                                                                                 \
    63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, \
        27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0

#if 0
/* Some test cases */
MY_NARG(A) -> 1
MY_NARG(A,B) -> 2
MY_NARG(A,B,C) -> 3
MY_NARG(A,B,C,D) -> 4
MY_NARG(A,B,C,D,E) -> 5
MY_NARG(1,2,3,4,5,6,7,8,9,0,
         1,2,3,4,5,6,7,8,9,0,
         1,2,3,4,5,6,7,8,9,0,
         1,2,3,4,5,6,7,8,9,0,
         1,2,3,4,5,6,7,8,9,0,
         1,2,3,4,5,6,7,8,9,0,
         1,2,3) -> 63
#endif

//xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx namespace closed and reopen
#define MY_NMS_GLOBAL(...) \
    }                      \
    __VA_ARGS__            \
    namespace te18_10      \
    {

//xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 数学运算宏
// 快速数学运算
#define MYMIN(a, b) ((a) < (b) ? (a) : (b))
#define MYMAX(a, b) ((a) > (b) ? (a) : (b))
#define MYABS(a) ((a) > 0 ? (a) : -(a))
#define MYSQUARE(x) ((x) * (x))